I know I'm not the only one to do this. I have dropped several over the years. One lady was and absolute b**** and assumed I bagged the grass for the low price I gave her. I said no. She wanted it bagged, I said it would be 2-3 times the price. Mowing her lawn 3 times was enough. I have dropped others. The last guy complained about his grass getting long about 3 years ago when it rained every day. I said well its like this for all my other customers cause it won't stop raining,,, it still didn't sink into his thick skull. At the end of the season I said I was taking my lawn service in a different direction and would not mow his lawn. Here in Minnesota we can drop a customer without giving them a reason. If its mid season I give them 2-4 weeks notice. I don't know if there is a law stating how much notice is needed.